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Output lost for a while when CPU switchover

 
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chatree
Junior
Junior


Joined: 24 Dec 2014
Posts: 1

PostPosted: 19/09/2017 12:31    Post subject: Output lost for a while when CPU switchover Reply with quote

Hi everybody
I am the new in Controllogix redundant.
The project used PLC Allen bradley L-71 CPU with Redundant CPU and there are remote ios via Ethernet ring.
I faced the problem that when the cpu switch form primary controller to secondary controller , remote io output signal will lost (Output signal will de energize) and after 2 or 3 seconds the remote output will recover back to normal state.

Has anybody have any suggestion?

Thank you in advance.
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parcell
Junior
Junior


Joined: 14 Apr 2017
Posts: 8

PostPosted: 20/09/2017 20:43    Post subject: Re: Output lost for a while when CPU switchover Reply with quote

chatree wrote:
Hi everybody
I am the new in Controllogix redundant.
The project used PLC Allen bradley L-71 CPU with Redundant CPU and there are remote ios via Ethernet ring.
I faced the problem that when the cpu switch form primary controller to secondary controller , remote io output signal will lost (Output signal will de energize) and after 2 or 3 seconds the remote output will recover back to normal state.

Has anybody have any suggestion?

Thank you in advance.

try to read this.
http://www.plctalk.net/qanda/showthread.php?t=108500
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